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Weird simulaneous connection to all of our LFS servers
2
(30 posts, started )
Fact of life; You put stuff on the internet, you will get port scanned. Decent software will attempt to talk to the port if it's open and try to verify what it is.

Unless you've got a reason to think you're being directly targetted I'd be surprised if its more than that.

If you're really bothered by it you can start looking at tools like fail2ban that consume the LFS server log and block the IPs (if you're on windows scripting something up using powershell, a quick regex to filter the logs and calls to create/modify firewall rules should suffice).
Another attempt at our servers:

Aug 30 18:38:39 Accept : 185.141.60.223
Aug 30 18:38:39 Received 47 : 185.141.60.223
Aug 30 18:38:39 Unknown protocol : 185.141.60.223
Aug 30 18:38:39 Unknown protocol : 185.141.60.223

Reported the IP address on abuseIPDB.

https://www.abuseipdb.com/check/185.141.60.223
Any idea what this can be?

Sep 09 18:17:19 Found guest for packet with unknown ephemeral port
That is no problem and it is normal that message may come up sometimes.

More info for interest:

Sometimes a guest's ephemeral port for the UDP packets can change.

This port, originally assigned by the operating system, is normally used by LFS as part of the identification of which guest a UDP position packet comes from. But the port is ephemeral and the operating system (or is it the router - not going to think too hard about this) can change it at any time. If it does change, then LFS does a more thorough check to figure out which guest the packet came from and stores the new ephemeral port.
Thanx for info Thumbs up
2

Weird simulaneous connection to all of our LFS servers
(30 posts, started )
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